Operator for windows with swinging sash



A. w. AHLGREN 2,961,266

OPERATOR FOR WINDOWS WITH SWINGING SASH 2 Sheets-Sheet 1 Nov. 22, 1960Filed June 16, 1958 Nov. 22, 1960 A. w. AHLGREN 2,961,266

OPERATOR FOR WINDOWS WITH SWINGING SASH Filed June l6. 1958 2Sheets-Sheet 2 F zlqA.

cfl musy 2,961,266 Ice Pa tented Nov. 22 1960 OPERATOR non wngzggws WITHSWINGING Axel W. Ahlgren, Rockford, Ill., assignor to AmerockCorporation, Rockford, Ill., a corporation of Illinois Filed June 16,1958, Ser. N0.'7.42,112

2 Claims. (Cl. 292263) This invention relates to awning windows of thetype in which a sash is pivotally supported in a frame to swing about anaxis extending along one edge of the sash and is opened and closed by abar which is connected to the sash on the side opposite this axis. Thebar is generally perpendicular to the sash and projects through a holeina guide which is secured to the frame. The bar may be formed in aplurality of sections disposed end to end and pivotally connectedtogether so that, when the sash is partly opened, the sections of thebar inside the guide may be swung laterally to an out-of-the-wayposition.

Gne object of the invention is to provide in a window of the abovecharacter a novel and inexpensive arrangement for closing 011 the holein the guide and prevent inects from entering through this hole while,at the same time, permitting the guide to slide and to tilt thereby toaccommodate the changing angle of the sash.

The invention also resides in the provision of a novel means whichoperates automatically as an incident to the swinging of a sectionlaterally to prevent the bar from sliding in the guide so that the sashcannot be moved from the outside.

Other objects and advantages of the invention will be come apparent fromthe following detailed description taken in connection with theaccompanying drawings, in which:

Figure 1 is a perspective view of a window employing the novel operatorbar arrangement of the'present invention.

Fig. 2 is an enlarged sectional view taken along the line 2--2 in Fig.1.

Fig. 3 is a view similar to Fig. 2 but shows the parts in a differentposition.

Fig. 4 is an enlarged fragmentary horizontal sectional view takengenerally along a line extending across the top of the guide.

Fig. 5 is an enlarged fragmentary front elevation.

Fig. 6 is an enlarged fragmentary perspective view of the guide.

Fig. 7 is an enlarged exploded perspective view of the guide.

As shown in the drawings for purposes of illustration, the invention isembodied in an operator for an awning type window in which a sash 10 ispivotally supported in a frame 11 to swing about a horizontal axisextending along the upper edge of the sash. The sash is swung open andclosed by an elongated operator 12 which is generally perpendicular tothe sash and is pivotally connected at its outer end to the sash alongthe lower edge thereof. The pivotal connection between the operator andthe sash may be of any suitable type and herein is a curl 13 (Fig. 3)formed on the outer end of the operator and encircling a horizontal pin14 mounted in a bracket 15 on the sash.

To guide the operator 12 for endwise movement, the latter projectsthrough a support or guide 16 which is fastened to the sill 17 of thewindow frame 11. Herein, the base is L-shaped with the horizontal leg orflange 18 secured to the sill by screws 19 and the upright leg 20parallel to the plane of the frame. A rectangular hole 21 is formed inthe leg 20 and is substantially equal in width to the operator 12 but issomewhat higher than the thickness of the operator so that the lattermay slide and tilt in the hole. The window may be provided with theusual screen 22 whose frame is cut out along the lower edge behind theleg 20 to permit the bar 12 to project through.

Preferably, the operator 12 is formed in four sections 23, 24, 25 and 26disposed end to end with their adjacent ends pivotally joined together.Thus, the outer section 23, which herein is considerably shorter thanthe others, is formed with the curl 13 and its inner end is joined tothe second section 24 by a pivot pin 27. Similarly, a pivot pin 28 joinsthe adjacent ends of the second and third sections 24 and 25 and a pin29 couples the third and inner sections 25 and 26. With thisarrangement, the pin 27 is immediately behind the leg 20 when the sash10 is closed so that the other three sections may be swung to one sideas shown in full lines in Fig. 4. In a like manner, the operator 12 maybe stopped with the pivot pin 23 behind the leg 20 in which case thethird and inner sections are swung laterally to hold the sash partlyopen (see Fig. 1), or the operator may be stopped at the pin 29.

In accordance with the present invention, the guide 16 is constructedand coacts with the operator 12 in a novel manner so as substantially toblock the hole 21 and prevent insects from entering while stillpermitting the operator to slide and tilt in the hole as it opens andcloses the sash 10. To this end, wall members 30 project outwardly fromopposite side edges of the hole 21 and a fiat spring strip 31 projectsoutwardly and downwardly from the top of the hole to bear resiliently,on the operator 12. Thus, the walls 30, the spring 31 and the operatorcooperate to form a box which changes shape as the operator tilts(compare Figs. 2 and 3) but which always substantially blocks and hencecloses the hole 21.

Herein, the support or guide 16 is a casting and, as shown in Fig. 7,the wall members 30 are in the form of ears cast integrally with theguide. The opposed surfaces of these ears are coplanar and coextensivewith the sides of the hole 21 so that, as illustrated in Fig. 4, thesesurfaces lie closely alongside the edges of the operator.

While various methods may be used to form the spring strip 31 and toattach it to the guide 16, it is preferred to make it as a part of aseparate piece 32 (Fig. 7). The latter is stamped from a sheet of springsteel and is formed with vertical legs 33 connected by a crosspiece 34and lying flat against the outer surface of the guide 16 with the edgesof the legs projecting into notches 35 extending along the inner ends ofthe ears 30. The legs 33 straddle the ears 30 and between them thespring strip 31 projects downwardly and outwardly from the crosspiece34. Tabs 36 are bent inwardly from the lower ends of the legs 33 andproject in under the guide 16 in recesses 37 formed in the underside ofthe latter so that the stamping 32 is clamped between the guide and thesill 17.

With the foregoing arrangement, the operator bar 12 projects generallyhorizontally through the hole 21 when the sash 10 is closed as shown inFig. 2 and the spring strip 31 bears against the top of the barresiliently holding the latter against the top of the flange 18 of theguide 16. In this way, the bar 12, the spring 31 and the walls 30 form atriangular box which substantially covers the hole 21. As the operatorbar is pushed forward to open the sash, the bar tilts up (see Fig. 3)and the spring strip is bent resiliently upwardly a correspondingamount. Thus, the triangular box changes shape but it neverthelesssubstantially covers the hole 21.

According to another aspect of the invention, the operator bar 12 andthe guide 16 are constructed in a novel manner so that the sash may belatched in various positions and, when so latched, it cannot beunlatched from the outside. For this purpose, a circular recess 38 (Fig.6) is formed in the top of the flange 18 of the guide in front of thehole 21 and lugs or detents projecting downwardly from the operator barare received in this recess, the detents being spaced along the bar tobe effective for different positions of the sash. Herein, the lugs areformed by the pivot pins 27, 28 and 29 which project downwardly belowthe operator bar as shown in Figs. 2 and 3. Thus, when the sash isclosed, the pin 27 projects into the recess 38. To open the sash, thebar 12 is raised slightly to lift the pin out of the recess and the baris pushed forward to open the sash. When the sash is partly open, thepin 28 enters the recess and holds the sash in this position. Similarly,the sash may be held further open by the pin 29 and, if desired, anadditional lug 39 (Fig. 1) may be secured to the bar 12 adjacent theinner end of the latter to hold the sash fully open.

When the sash 10 is latched by one of the pins 27, 28 and 29, thesections of the bar 12 behind the active pin are swung laterally aboutthis pin to overlie the sill 17. Advantage is taken of this to preventthe bar from being raised to lift the pin out of the recess 38 as longas the inner sections of the bar are in the lateral position so that thebar cannot be moved from outside the window. For this purpose, means isprovided to prevent the operator, when one or more sections has beenturned, from being raised enough to lift the active pivot pin out of therecess 38. Herein this means comprises ears 40 projecting inwardly fromthe inner side of the flange of the guide 16 on opposite sides of thehole 21. The lower ends of these ears stop short of the base flange 18of the guide by a distance which is greater than the thickness of theoperator bar 12 but is less than combined thickness of the bar and depththat the pivot pins project beneath the bar. Thus, when a section of thebar is swung in under one of the ears as shown in Fig. 4, the bar whenraised abuts the ear before the active pin is raised out of the recess38. As a result, the bar cannot he slid in the hole 21 and hence thesash 10 cannot be opened or closed without first straightening the bar.

I claim as my invention:

1. For use with a window having a frame and a sash mounted in said frameto swing about a predetermined axis, the combination of, a supportadapted to be secured to said frame and having a flange disposedparallel to the plane of the frame, said flange having a holetherethrough, two elongated members pivotally joined together atadjacent ends to form-an operator bar projecting through and sliding insaid hole, a lug projecting downwardly from one of said members adjacentthe pivotal connection thereof, a recess formed in said support behindand below said hole to receive said lug and prevent sliding of saidmembers, and an ear projecting rearwardly from said flange alongsidesaid hole and spaced above said recess to permit one of the members tobe swung under the car when the lug is in the recess, the space betweenthe ear and the recess being less than the combined thickness of saidone member and said lug to prevent the lug from being lifted out of therecess.

2. For use with a window having a frame and a sash mounted in said frameto swing about a predetermined horizontal axis, the combination of, asupport adapted to be secured to said frame and having a vertical flangedisposed parallel to the plane of the frame, said flange having agenerally rectangular hole therein, an elongated rigid bar projectingthrough said hole to be guided in the hole for endwise sliding, means onthe outer end of said bar for pivotally connecting the bar to said sashwith the pivotal axis paralleling said predetermined axis whereby thebar tilts in said hole as the sash is swung open and closed, said barbeing substantially as wide as said hole and said hole providingsubstantial clearance between the top of said bar and the top of saidhole to permit the bar to tilt during opening and closing of the sash,means rigid with said support and forming generally parallel wallsprojecting outwardly from opposite sides of said hole to lie closelyalongside said bar, and a flat spring strip mounted on said flange andprojecting down from the top of said hole and between said walls to bearresiliently against said bar and hold the latter against the lower edgeof said hole, said strip being substantially as wide as said bar wherebysaid bar, said walls and said spring strip block said hole whilepermitting the bar to slide and tilt in the hole.

Cook Mar. 5, 1935 Turner Aug. 14, 1956

